#include "stdio.h"

int twoDigitAdd(int a, int b) {
    //在此处添加相应代码
    int sum=0;
	if (a>=100) a=a-(a/100)*100;
	if (b>=100) b=b-(b/100)*100;
	sum=a+b;
	if (sum>=100) sum=sum-(sum/100)*100;
	return sum;
}

int main(void)
{
    int a = 45;
    int b = 56;
    printf("%d add %d is %d", a, b, twoDigitAdd(a, b));
    return 0;
}

